A
Mailer ID is your key to getting data about your mailings using the
Intelligent Mail barcode. The Mailer ID is a field within the IMB, and it’s
used to identify mailpieces, trays, sacks, and containers.

You can apply for a Mailer ID at your Business Mail
Entry Unit or through your local Mailpiece Design Analyst. Find the nearest
office using the postal locator tools on Postal Explorer at pe.usps.com (click on “Postal
Locators” in the left frame).

Information about the application process is available
at ribbs.usps.gov.
Click on “Intelligent
Mail/Mailer ID Application” in the left column. You
can also download a form and instructions to help speed the application
process.